Let's simplify the expression step by step.

The expression to simplify is:

\[
- \frac{4}{12} - \left(-\frac{13}{39} - 0.25\right) + 0.75 - \frac{4}{12} - \left(-\frac{13}{39} - 0.25\right) + 0.75
\]

First, we can simplify the fractions and numbers.

1. Simplify \(-\frac{4}{12}\):

\[
-\frac{4}{12} = -\frac{1}{3}
\]

2. Simplify \(-\frac{13}{39}\):

\[
-\frac{13}{39} = -\frac{1}{3} \quad (\text{since } 13 \div 13 = 1 \text{ and } 39 \div 13 = 3)
\]

3. Convert \(0.25\) to a fraction:

\[
0.25 = \frac{1}{4}
\]

Now we put these in the expression:

First, simplify \(-\frac{13}{39} - 0.25\):

\[
-\frac{1}{3} - \frac{1}{4}
\]

Find a common denominator for \(-\frac{1}{3}\) and \(-\frac{1}{4}\). The least common multiple of 3 and 4 is 12.

Convert each fraction:

\[
-\frac{1}{3} = -\frac{4}{12}, \quad -\frac{1}{4} = -\frac{3}{12}
\]

Now combine them:

\[
-\frac{4}{12} - \frac{3}{12} = -\frac{7}{12}
\]

So, we now rewrite the expression with this substitution:

\[
-\frac{1}{3} - \left(-\frac{7}{12}\right) + 0.75 - \frac{1}{3} - \left(-\frac{7}{12}\right) + 0.75
\]

Rearranging gives us:

\[
-\frac{1}{3} + \frac{7}{12} + 0.75 - \frac{1}{3} + \frac{7}{12} + 0.75
\]

Combine the two terms:

1. First, let's add the two \(-\frac{1}{3}\):

\[
-\frac{1}{3} - \frac{1}{3} = -\frac{2}{3}
\]

2. Add \(\frac{7}{12}\) twice:

\[
\frac{7}{12} + \frac{7}{12} = \frac{14}{12} = \frac{7}{6}
\]

3. Convert \(0.75\) to a fraction:

\[
0.75 = \frac{3}{4}
\]

4. Combine \(-\frac{2}{3}\), \(\frac{7}{6}\), and \(\frac{3}{4}\).

Let's convert them all to the least common multiple, which is 12:

\[
-\frac{2}{3} = -\frac{8}{12}, \quad \frac{7}{6} = \frac{14}{12}, \quad \frac{3}{4} = \frac{9}{12}
\]

Now combine them:

\[
-\frac{8}{12} + \frac{14}{12} + \frac{9}{12}
\]

Calculating gives:

\[
(-8 + 14 + 9) / 12 = (15) / 12 = \frac{15}{12} = \frac{5}{4} = 1.25
\]

Thus, the simplified value of the original expression is:

\[
\boxed{1.25}
\]